Fuse Block - I/P Bottom View

WARNING: This page is about a different car, the 2006 GMC Sierra, 2006 GMC Cab & Chassis Sierra, 2006 Chevrolet Silverado, and 2006 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Fuse Block - I/P Bottom View

Courtesy of GENERAL MOTORS CORP.

Fuse Block - I/P C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12193906 68-Way F Metri-Pack 280 Series (BK)
Pin	Wire Color	Circuit No.	Function
A1	-	-	Not Used
A2	L-BU	244	Passenger Door Lock Switch Lock Supply Voltage (AU3 w/o YE9)
A2	GY/BK	255	Power Door Lock Fuse Supply Voltage (Crew Cab w/YE9)
A3	-	-	Not Used
A4	D-BU	245	Passenger Door Lock Switch Unlock Supply Voltage (AU3 w/o YE9)
A4	TN/BK	254	Power Door Unlock Fuse Supply Voltage (Crew Cab w/YE9)
A5	-	-	Not Used
A6	D-BU	2115	Right Turn Signal Lamps Supply Voltage
A7	OG	4240	Battery Positive Voltage (Except Base)
A8	YE	1618	Trailer Left Rear Turn/Stop Lamp Supply Voltage
A9	D-GN	1619	Trailer Right Rear Turn/Stop Lamp Supply Voltage
A10	-	-	Not Used
A11	D-BU	2115	Right Turn Signal Lamps Supply Voltage
A11	D-BU	2115	Right Turn Signal Lamps Supply Voltage
A12	RD	42	Battery Positive Voltage
B1	YE	143	Accessory Voltage
B1	YE	143	Accessory Voltage
B2	YE	43	Accessory Voltage
B3-B5	-	-	Not Used
B6	L-GN	1391	Driver Door Unlock Relay Control (AU3 w/o YE9)
B7	-	-	Not Used
B8	WH	17	Stop Lamp Switch Signal
B9-B10	-	-	Not Used
B11	L-BU	195	Door Lock Control (AU3 w/o YE9)
B11	L-BU	195	Door Lock Control (AU3 w/o YE9)
B12	OG	2140	Battery Positive Voltage
C1	-	-	Not Used
C2	BN	141	Ignition 3 Voltage (C42)
C3	-	-	Not Used
C4	BN	41	Ignition 3 Voltage
C4	BN	41	Ignition 3 Voltage (w/PTO or K34)
C5	BN	441	Ignition 3 Voltage (NW7)
C8	L-BU	1620	Trailer CHMSL Supply Voltage
C8	L-BU	1620	Trailer CHMSL Supply Voltage
C9	GY	295	Door Lock Actuator Lock Control (w/o YE9)
C10-C12	-	-	Not Used
D1	YE	243	Accessory Voltage
D2	-	-	Not Used
D3	BN	341	Ignition 3 Voltage
D3	BN	341	Ignition 3 Voltage
D4	-	-	Not Used
D5	BN	441	Ignition 3 Voltage
D5	BN	441	Ignition 3 Voltage
D6-D8	-	-	Not Used
D9	WH	194	Door Unlock Control (AU3 w/o YE9)
D9	WH	194	Door Unlock Control (AU3 w/o YE9)
D10	BK/WH	1851	Ground
D11	TN	294	Door Lock Actuator Unlock Control (AU3 w/o YE9)
D12	-	-	Not Used
E1	BN	241	Ignition 3 Voltage (TP2)
E2	BN	241	Ignition 3 Voltage - Front Axle Actuator (NP1/NP2/NP8)
E2	BN	241	Ignition 3 Voltage - Transfer Case Control Switch (NP1/NP8)
E3	-	-	Not Used
E4	GY	118	Left Front Door Speaker Output (-) (UQ3/UQ5/UQ7)
E5	BN	1046	DDM Class 2 Serial Data (YE9)
E6	-	-	Not Used
E7	PK	1691	Automatic Day/Night Mirror Low Reference (DF5/DL3)
E8	WH	530	Ignition 0 Voltage
E9	-	-	Not Used
E10	RD	842	Battery Positive Voltage
E11	OG	4040	Battery Positive Voltage
E12	OG	2240	Battery Positive Voltage
F1-F2	-	-	Not Used
F3	L-BU	2114	Left Turn Signal Lamps Supply Voltage
F3	L-BU	2114	Left Turn Signal Lamps Supply Voltage
F4	GY/BK	745	Left Front Door Ajar Switch Signal (w/o YE9)
F4	GY	1690	Automatic Day/Night Mirror Signal (DF5/DL3)
F5	TN	201	Left Front Door Speaker Output (+) (UQ3/UQ5/UQ7)
F6	BK	1050	Ground
F7	BN/WH	230	Fuel Pump Enable Control (AU3 w/o YE9)
F8	PK	1020	Ignition 0 Voltage
F9	L-BU	1320	CHMSL Supply Voltage/Stop Lamp Supply Voltage (4.3L w/K34)
F9	L-BU	1320	CHMSL Supply Voltage/Stop Lamp Supply Voltage
F10-F12	-	-	Not Used

Fuse Block - I/P C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12193930 6-Way F Metri-Pack 280 Series Flexlock (BK)
Pin	Wire Color	Circuit No.	Function
A	OG	300	Ignition 3 Voltage
B	L-GN	1427	Right Turn Signal Switch Signal
C	D-GN	1428	Left Turn Signal Switch Signal
D	WH	111	Hazard Switch Signal
E	WH	1390	Ignition 0 Voltage
F	BN	4	Accessory Voltage

Fuse Block - I/P C3

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12194035 12-Way F Metri-Pack 280 Series (BK)
Pin	Wire Color	Circuit No.	Function
A	BN/WH	230	Instrument Panel Lamps Dimming Control (AU3 w/o YE9)
B	WH	194	Door Unlock Control (AU3 w/o YE9)
C	GY	295	Door Lock Actuator Lock Control (AU3 w/o YE9)
C	OG	1240	Battery Positive Voltage (YE9)
D	BK	1050	Ground (Except YE9)
	BK	1050	Ground (Except YE9)
	BK	1050	Ground (YE9)
E	-	-	Not Used
F	TN	694	Driver Door Lock Actuator Unlock Control (AU3 w/o YE9)
F	OG	4140	Battery Positive Voltage (Except Base)
G	TN	201	Left Front Speaker Output (+) (UQ3)
G	TN	201	Left Front Speaker Output (+)
H	PK	1691	Automatic Day/Night Mirror Low Reference (DF5/DL3)
J	L-BU	195	Door Lock Control (AU3 w/o YE9)
J	BN	1046	DDM Class 2 Serial Data
K	GY/BK	745	Left Front Door Ajar Switch Signal (w/o YE9)
K	GY	1690	Automatic Day/Night Mirror Signal (DF5/DL3)
L	GY	118	Left Front Speaker Output (-) (UQ3)
L	GY	118	Left Front Speaker Output (-)
M	BK	1851	Ground (AU3 w/o YE9)
M	L-BU	2114	Left Turn Signal Lamps Supply Voltage (YE9)

Fuse Block - I/P C4 (Crew Cab)

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15328768 12-Way F Metri-Pack 280 Series Flexlock (BN)
Pin	Wire Color	Circuit No.	Function
A-D	-	-	Not Used
E	TN	294	Door Lock Actuator Unlock Control (Crew Cab w/YE9)
E	TN	294	Door Lock Actuator Unlock Control (Crew Cab w/YE9)
F-J	-	-	Not Used
K	GY	295	Left Rear Door Lock Actuator Lock Control (Crew Cab w/YE9)
K	GY	295	Right Rear Door Lock Actuator Lock Control (Crew Cab w/YE9)
L	-	-	Not Used
M	OG	1240	Battery Positive Voltage (Crew Cab w/YE9)